tratar as saídas do curl [RESOLVIDO] [Shell Script]

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1. tratar as saídas do curl [RESOLVIDO]

Enviado em 24/07/2021 - 18:23h

Para simular um problema alterei o nome do arquivo PACKAGE.txt na linha do curl abaixo.

O if não esta funcionando corretamente. Mesmo com alteração do nome de PACKAGE.txt para PACKAGE.txt1 ele cai em
echo " Arquivo PACKAGE.txt baixado para /tmp "

rm -Rf /tmp/PACKAGE.txt

curl "$URL"/PACKAGE.txt1 -o "/tmp/PACKAGE.txt1" 2>/dev/null

if [ "$?" == "0" ]; then

echo " Arquivo PACKAGE.txt baixado para /tmp "

ls -lh /tmp/PACKAGE.txt

else

echo " Erro ao baixar o arquivo PACKAGE.txt do site $URL "
ls -lh /tmp/PACKAGE.txt

exit

fi

2. Re: tratar as saídas do curl [RESOLVIDO]

Melhor resposta

Enviado em 25/07/2021 - 23:30h

Recriei seu script para testes. A opção -f gera a saída 7, já é o bastante para o script funcionar.

#!/bin/bash



URL="https://slackbuilds.org/slackbuilds/14.2/multimedia/acetoneiso";

FILE="README1"



rm -Rf /tmp/$FILE



curl -f $URL/$FILE -o /tmp/$FILE 2>&-



if [ "$?" == "0" ]; then

	echo "Arquivo $FILE baixado para /tmp"

	ls -lh /tmp/$FILE

else

	echo "Erro ao baixar o arquivo PACKAGE.txt do site $URL"

	exit 1

fi

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3. Re: tratar as saídas do curl

Enviado em 25/07/2021 - 20:30h

Da manpage do curl.

       -f, --fail

              (HTTP) Fail silently (no output at all) on server  errors.  This

              is  mostly done to better enable scripts etc to better deal with

              failed attempts. In normal cases when an HTTP  server  fails  to

              deliver  a  document,  it  returns  an  HTML document stating so

              (which often also describes why and more). This flag  will  pre&#8208;

              vent curl from outputting that and return error 22.



              This  method is not fail-safe and there are occasions where non-

              successful response codes will  slip  through,  especially  when

              authentication is involved (response codes 401 and 407).

E também.

       --fail-early

              Fail and exit on the first detected transfer error.



              When curl is used to do multiple transfers on the command  line,

              it  will  attempt  to  operate on each given URL, one by one. By

              default, it will ignore errors if there are more URLs given  and

              the  last  URL's  success  will  determine  the  error code curl

              returns. So early failures will be "hidden" by  subsequent  suc&#8208;

              cessful transfers.



              Using  this  option,  curl  will  instead return an error on the

              first transfer that fails, independent of  the  amount  of  URLs

              that  are given on the command line. This way, no transfer fail&#8208;

              ures go undetected by scripts and similar.



              This option is global and does not need to be specified for each

              use of -:, --next.



              This option does not imply -f, --fail, which causes transfers to

              fail due to the server's HTTP status code. You can  combine  the

              two options, however note -f, --fail is not global and is there&#8208;

              fore contained by -:, --next.



              Added in 7.52.0.

... Então Jesus afirmou de novo: “(...) eu vim para que tenham vida, e a tenham plenamente.” (João 10:7-10)

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